Disconnectable connector assembly
Disengaging means for hose couplings
Door lock device
Double containment pressure termination fitting for...
Dual seal pipe coupling
Duct connector
Duct connector for a circular duct
Duct coupler apparatus
Duct coupler apparatus with compressible seals
Duct joiner and method of manufacture
Duct joiner and retaining clip therefor
Duct joining system
Duct joining system
Duct joining system
Duct joint frame
Duct jointing system
Duct jointing system
Ductile iron pipe joint employing a coupling and coupling theref